Hi, We are using perl-script for xml-rpc client and C binary for server. In other linux/solaris machine, we are able to successfully communicate. But on a particular solaris machine, we are getting the error like "Protocol not supported". http is enabled for the port we are looking for http://127.0.0.1:8081/RPC2 What protocol it referrring to. XMLRPC doc says that it uses http with xml encoding. What may be the problem. What are the protocols it expects. Thanks in Advance.